Alert archive / Massachusetts / Hampden County
Weather alerts in Hampden County, Massachusetts, 2023
172 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hampden County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 172
- Warnings
- 59
- Watches
- 26
- Advisories
- 24
- Busiest month
- July67 alerts
- Busiest day
- September 8, 202310 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hampden County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 19 | 15 | 21% | 23 | 91% | 47 min |
| Flash flood warnings | 10 | 1 | 90% | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 17 | 4 | 76% | 13 | 62% | 15 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 92 | 67 | 27% | 263 | 70% | 30 min |
| NWS Boston/Norton, MA: flash flood warnings | 73 | 16 | 78% | 76 | 91% | 76 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 4, 3:21 AM EST | Winter Weather Advisory | BOX | 64 hr |
| Jan 5, 2:40 PM EST | Winter Weather Advisory | BOX | 28 hr |
| Jan 18, 3:12 PM EST | Winter Weather Advisory | BOX | 52 hr |
| Jan 19, 6:21 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 21, 2:58 PM EST | Winter Weather Advisory | BOX | 54 hr |
| Jan 24, 3:39 AM EST | Winter Storm Watch | BOX | 11 hr |
| Jan 24, 2:49 PM EST | Winter Weather Advisory | BOX | 34 hr |
| Feb 1, 3:11 AM EST | Wind Chill Watch | BOX | 24 hr |
| Feb 2, 3:38 AM EST | Wind Chill Warning | BOX | 57 hr |
| Feb 7, 3:02 AM EST | Winter Weather Advisory | BOX | 23 hr |
| Feb 9, 3:11 PM EST | Wind Advisory | BOX | 25 hr |
| Feb 22, 3:32 AM EST | Winter Weather Advisory | BOX | 47 hr |
| Feb 23, 4:02 AM EST | Wind Advisory | BOX | 39 hr |
| Feb 23, 6:54 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 26, 3:45 AM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 26, 2:59 PM EST | Winter Weather Advisory | BOX | 48 hr |
| Feb 27, 3:17 AM EST | Winter Storm Warning | BOX | 30 hr |
| Mar 1, 2:57 PM EST | Winter Weather Advisory | BOX | 18 hr |
| Mar 2, 3:06 PM EST | Winter Storm Watch | BOX | 12 hr |
| Mar 3, 3:28 AM EST | Winter Storm Warning | BOX | 35 hr |
| Mar 3, 3:28 AM EST | Winter Weather Advisory | BOX | 35 hr |
| Mar 10, 2:56 PM EST | Winter Weather Advisory | BOX | 12 hr |
| Mar 11, 3:09 PM EST | Winter Storm Watch | BOX | 47 hr |
| Mar 12, 3:35 PM EDT | Winter Storm Warning | BOX | 58 hr |
| Mar 13, 3:36 PM EDT | Winter Weather Advisory | BOX | 34 hr |
| Mar 14, 12:54 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 14, 9:51 PM EDT | Wind Advisory | BOX | 17 hr |
| Mar 30, 12:10 AM EDT | Special Weather Statement | BOX | 35 min |
| Apr 1, 6:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Apr 1, 6:53 PM EDT | Special Weather Statement | BOX | 67 min |
| Apr 6, 3:48 PM EDT | Fire Weather Watch | BOX | 11 hr |
| Apr 7, 3:12 AM EDT | Red Flag Warning | BOX | 17 hr |
| Apr 10, 2:09 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 11, 1:48 AM EDT | Red Flag Warning | BOX | 17 hr |
| Apr 11, 7:09 PM EDT | Red Flag Warning | BOX | 24 hr |
| Apr 15, 4:48 PM EDT | Special Weather Statement | BOX | 42 min |
| Apr 15, 5:00 PM EDT | Special Weather Statement | BOX | 45 min |
| Apr 15, 5:35 PM EDT | Special Weather Statement | BOX | 40 min |
| Apr 22, 9:08 PM EDT | Special Weather Statement | BOX | 52 min |
| Apr 22, 10:50 PM EDT | Special Weather Statement | BOX | 40 min |
| May 14, 6:44 PM EDT | Frost Advisory | BOX | 12 hr |
| May 15, 3:58 AM EDT | Fire Weather Watch | BOX | 40 hr |
| May 16, 2:29 AM EDT | Red Flag Warning | BOX | 17 hr |
| May 16, 3:26 PM EDT | Freeze Watch | BOX | 25 hr |
| May 16, 7:45 PM EDT | Red Flag Warning | BOX | 24 hr |
| May 17, 4:23 PM EDT | Freeze Warning | BOX | 14 hr |
| May 24, 4:43 PM EDT | Special Weather Statement | BOX | 32 min |
| Jun 2, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 2, 12:40 PM EDT | Special Weather Statement | BOX | 50 min |
| Jun 2, 1:25 PM EDT | Special Weather Statement | BOX | 35 min |
| Jun 6, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 3:02 PM EDT | Severe Thunderstorm Warning | BOX | 58 min |
| Jun 14, 12:06 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 3:40 PM EDT | Special Weather Statement | BOX | 65 min |
| Jun 14, 4:06 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jun 26, 2:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 5:19 PM EDT | Special Weather Statement | BOX | 56 min |
| Jun 26, 6:02 PM EDT | Severe Thunderstorm Warning | BOX | 58 min |
| Jun 26, 6:51 PM EDT | Severe Thunderstorm Warning | BOX | 54 min |
| Jun 28, 4:58 PM EDT | Special Weather Statement | BOX | 62 min |
| Jul 2, 8:36 PM EDT | Special Weather Statement | BOX | 54 min |
| Jul 3, 12:08 AM EDT | Special Weather Statement | BOX | 37 min |
| Jul 3, 10:13 AM EDT | Flood Watch | BOX | 34 hr |
| Jul 4, 11:12 AM EDT | Flash Flood Warning | BOX | 4 hr |
| Jul 4, 11:41 AM EDT | Special Weather Statement | BOX | 64 min |
| Jul 8, 3:23 PM EDT | Flood Watch | BOX | 52 hr |
| Jul 8, 4:44 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Jul 8, 5:46 PM EDT | Special Weather Statement | BOX | 59 min |
| Jul 8, 6:36 PM EDT | Special Weather Statement | BOX | 54 min |
| Jul 8, 7:04 PM EDT | Flash Flood Warning | BOX | 119 min |
| Jul 9, 1:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 9, 2:19 PM EDT | Special Weather Statement | BOX | 41 min |
| Jul 10, 6:19 AM EDT | Special Weather Statement | BOX | 56 min |
| Jul 10, 7:22 AM EDT | Special Weather Statement | BOX | 83 min |
| Jul 10, 7:49 AM EDT | River Flood Warning | ALY | 3 hr |
| Jul 10, 8:30 AM EDT | Areal Flood Warning | BOX | 5 hr |
| Jul 10, 10:29 AM EDT | Areal Flood Warning | BOX | 4 hr |
| Jul 10, 12:52 PM EDT | River Flood Warning | BOX | 21 days |
| Jul 10, 12:52 PM EDT | River Flood Warning | BOX | 62 hr |
| Jul 10, 12:52 PM EDT | River Flood Warning | BOX | 40 hr |
| Jul 10, 6:08 PM EDT | River Flood Warning | BOX | 21 days |
| Jul 13, 12:12 PM EDT | Flood Watch | BOX | 36 hr |
| Jul 13, 9:15 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Jul 13, 10:08 PM EDT | Special Weather Statement | BOX | 67 min |
| Jul 14, 9:52 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 14, 10:31 AM EDT | Special Weather Statement | BOX | 59 min |
| Jul 14, 11:50 AM EDT | Areal Flood Warning | BOX | 2 hr |
| Jul 15, 3:09 AM EDT | Flood Watch | BOX | 44 hr |
| Jul 16, 7:07 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 8:21 AM EDT | Tornado Watch | SPC | 7 hr |
| Jul 16, 9:23 AM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 16, 9:59 AM EDT | River Flood Warning | ALY | 4 hr |
| Jul 16, 10:16 AM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Jul 16, 10:49 AM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 16, 7:51 PM EDT | River Flood Warning | BOX | 36 hr |
| Jul 17, 2:52 PM EDT | Flood Watch | BOX | 32 hr |
| Jul 18, 12:10 PM EDT | Special Weather Statement | BOX | 65 min |
| Jul 18, 1:35 PM EDT | Special Weather Statement | BOX | 55 min |
| Jul 18, 2:38 PM EDT | Special Weather Statement | BOX | 52 min |
| Jul 21, 12:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 21, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 21, 1:55 PM EDT | Special Weather Statement | BOX | 65 min |
| Jul 21, 4:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 21, 8:09 PM EDT | Special Weather Statement | BOX | 66 min |
| Jul 25, 12:57 PM EDT | Special Weather Statement | BOX | 48 min |
| Jul 25, 1:29 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 25, 1:41 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 25, 2:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 25, 3:27 PM EDT | Heat Advisory | BOX | 4 days |
| Jul 25, 3:51 PM EDT | Special Weather Statement | BOX | 54 min |
| Jul 25, 4:10 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Jul 26, 12:37 PM EDT | Flood Watch | BOX | 31 hr |
| Jul 27, 11:05 AM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 27, 12:48 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 3:10 PM EDT | Severe Thunderstorm Warning | BOX | 65 min |
| Jul 27, 4:03 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Jul 27, 4:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 27, 4:35 PM EDT | Severe Thunderstorm Warning | BOX | 55 min |
| Jul 27, 5:22 PM EDT | Severe Thunderstorm Warning | BOX | 53 min |
| Jul 27, 6:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 29, 3:08 AM EDT | Flood Watch | BOX | 19 hr |
| Jul 29, 11:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 29, 1:33 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 4:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 5:11 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jul 29, 6:07 PM EDT | Special Weather Statement | BOX | 53 min |
| Jul 29, 7:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 4, 11:21 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 4, 12:10 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Aug 4, 6:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 12:50 PM EDT | Special Weather Statement | BOX | 40 min |
| Sep 4, 2:49 PM EDT | Heat Advisory | BOX | 4 days |
| Sep 7, 9:03 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Sep 8, 1:27 PM EDT | Severe Thunderstorm Warning | BOX | 63 min |
| Sep 8, 2:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 8, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 4:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 8, 5:01 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 8, 5:31 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Sep 8, 5:58 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Sep 8, 6:06 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Sep 8, 6:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 8, 8:56 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Sep 9, 6:11 PM EDT | Special Weather Statement | BOX | 49 min |
| Sep 9, 6:57 PM EDT | Special Weather Statement | BOX | 48 min |
| Sep 9, 7:28 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Sep 9, 7:40 PM EDT | Special Weather Statement | BOX | 50 min |
| Sep 10, 1:42 PM EDT | Special Weather Statement | BOX | 48 min |
| Sep 11, 5:44 PM EDT | Special Weather Statement | BOX | 61 min |
| Sep 11, 5:51 PM EDT | Flash Flood Warning | BOX | 5 hr |
| Sep 12, 12:58 PM EDT | Flood Watch | BOX | 34 hr |
| Sep 13, 7:50 AM EDT | Flash Flood Warning | BOX | 4 hr |
| Sep 13, 9:23 AM EDT | Flash Flood Warning | BOX | 3 hr |
| Sep 18, 2:47 AM EDT | Flood Watch | BOX | 22 hr |
| Sep 28, 5:45 AM EDT | Dense Fog Advisory | BOX | 4 hr |
| Sep 29, 12:30 PM EDT | Areal Flood Warning | BOX | 14 hr |
| Sep 29, 3:35 PM EDT | Special Weather Statement | BOX | 85 min |
| Oct 5, 3:27 AM EDT | Dense Fog Advisory | BOX | 7 hr |
| Dec 8, 2:23 PM EST | Flood Watch | BOX | 67 hr |
| Dec 11, 12:32 AM EST | Areal Flood Warning | BOX | 9 hr |
| Dec 16, 2:11 PM EST | Flood Watch | BOX | 52 hr |
| Dec 17, 2:59 AM EST | Wind Advisory | BOX | 37 hr |
| Dec 18, 7:57 AM EST | Areal Flood Warning | BOX | 11 hr |
| Dec 18, 8:01 AM EST | Areal Flood Warning | BOX | 11 hr |
| Dec 18, 10:59 AM EST | River Flood Warning | ALY | 7 hr |
| Dec 18, 12:39 PM EST | River Flood Warning | BOX | 13 hr |
| Dec 18, 6:09 PM EST | River Flood Warning | BOX | 72 hr |
| Dec 18, 6:15 PM EST | River Flood Warning | BOX | 4 days |
| Dec 19, 12:00 AM EST | River Flood Warning | BOX | 36 hr |
| Dec 24, 8:56 PM EST | Dense Fog Advisory | BOX | 12 hr |
| Dec 25, 7:01 PM EST | Dense Fog Advisory | BOX | 18 hr |
| Dec 26, 7:22 PM EST | Dense Fog Advisory | BOX | 12 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 19 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 38 |
| Flooding | |
| Areal Flood Warning | 8 |
| Flash Flood Warning | 10 |
| River Flood Warning | 12 |
| Flood Watch | 11 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.